The Whence and the Whither of Man: A Brief History of His Origin and Development Through Conformity to Environment; Being the Morse Lectures of 1895C. Scribner's Sons, 1897 - 312 pagine |
Dall'interno del libro
Risultati 1-5 di 45
Pagina v
... digestive and reproductive organs , and of tissues . - Forms intermediate between amoeba and hydra : Magosphæra , volvox . - Embryonic development . - Turbellaria : Appearance of a body wall , of ganglion , and nerve - cords . CHAPTER ...
... digestive and reproductive organs , and of tissues . - Forms intermediate between amoeba and hydra : Magosphæra , volvox . - Embryonic development . - Turbellaria : Appearance of a body wall , of ganglion , and nerve - cords . CHAPTER ...
Pagina vii
... digestion and reproduction , then for mus- cular strength and activity , then for shrewdness , finally for unselfishness and righteousness . — An ultimate " power , not ourselves , making for right- eousness , " a personality . - Our ...
... digestion and reproduction , then for mus- cular strength and activity , then for shrewdness , finally for unselfishness and righteousness . — An ultimate " power , not ourselves , making for right- eousness , " a personality . - Our ...
Pagina xii
... digestion and reproduction , and the same is true of the lowest and most primitive animals . A muscular system cannot develop and do its work until some sort of a digestive system has arisen to furnish nutriment , any more than a steam ...
... digestion and reproduction , and the same is true of the lowest and most primitive animals . A muscular system cannot develop and do its work until some sort of a digestive system has arisen to furnish nutriment , any more than a steam ...
Pagina 19
... digestive , ner- vous , etc. they give us a very fair idea of what our ancestor at each stage must have been . But it is on this balance and relative development of the different systems , that is , whether an animal is more reproduc ...
... digestive , ner- vous , etc. they give us a very fair idea of what our ancestor at each stage must have been . But it is on this balance and relative development of the different systems , that is , whether an animal is more reproduc ...
Pagina 35
... digestive function exists in all animals merely to bring the food into a soluble , diffusible form , so that it can ... digestion . But the amount of oxygen required , and of waste to be removed is proportional to the mass ; for every ...
... digestive function exists in all animals merely to bring the food into a soluble , diffusible form , so that it can ... digestion . But the amount of oxygen required , and of waste to be removed is proportional to the mass ; for every ...
Altre edizioni - Visualizza tutto
The Whence and the Whither of Man: A Brief History of His Origin and ... John Mason Tyler Visualizzazione completa - 1896 |
The Whence and the Whither of Man: A Brief History of His Origin and ... John Mason Tyler Visualizzazione completa - 1896 |
The Whence and the Whither of Man: A Brief History of His Origin and ... John Mason Tyler Visualizzazione completa - 1899 |
Parole e frasi comuni
advance amoeba amphibia anatomical ancestors animal kingdom annelid apes appear appetite archenteron attained become better birds body brain cells conformity to environment conscious degeneration dominant ectoderm embryo embryology existence experience eyes fish functions future ganglion gastrula gills give groups higher animals higher forms highest human hydra important increase individual insect instinct intelligence jaws knowledge laws layer legs living locomotion lower mammals man's marsupial membrane ment mental mind mode modified mollusks moral mouth muscles muscular muscular system mutability of species natural selection nephridia nerve nervous system never notochord nutriment organs oxygen parapodia perception perivisceral cavity possible primitive probably progress protoplasm protozoa purely race reflex action reptiles result schematic worm segments selfish sense-organs sequence shell skeleton species spermatozoa stage structure struggle surface survive swimming theory of evolution tion tissues true truth turbellaria unselfishness variation velopment vertebrates volvox young